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ACRS Thermo-Hydraulic Phenomena Subcommittee Meeting - September 26-27, 2001

ADVISORY COMMITTEE ON REACTOR SAFEGUARDS
THERMAL-HYDRAULIC PHENOMENA SUBCOMMITTEE MEETING:
DUANE ARNOLD ENERGY CENTER POWER UPRATE REQUEST,
SEPTEMBER 26-27, 2001
ROCKVILLE, MARYLAND

PRESENTATION SCHEDULE

Contact: P. Boehnert (301/415-8065)
("pab2@nrc.gov")

September 26, 2001

   TOPIC PRESENTER TIME
I. Opening Remarks G. Wallis, Chairman,
D. Powers, ACRS
Cognizant Member
1:00 p.m.
II. Duane Arnold Power Uprate      
A. NMC Presentations
    (Open/Closed?)
NMC/GE Nuclear Energy 1:15 p.m.
1. Introduction
2. Plant Changes to Accommodate Power Uprate
3. Compliance with Regulatory Requirements
     - Hardware Modifications
     - Analyses Performed
     - Impact on Plant Margins
4. Response to ACRS Questions:
     - Plant Operator Training
     - Stability Monitor/Instability Avoidance
     - ATWS Event Response for Uprate Conditions
     - Fuel response for ATWS/Power Excursions
     - Material Degradation Issues
     - Impact on Containment Drywell/Wetwell Temperature Limits
     - Impact of Uprate on Steam Separator/Dryer System
5. ECCS Analyses
     - Methodology
     - Results

6. PRA Analyses
      - Analyses Performed/Results
            (CDF LERF, CDFs & LERFs, Associated Uncertainties(1))
      - Evaluation of Missing PRA Elements(2)
            (e.g., fire, seismic, shutdown risk)

7. Resolution of Open Issues

8. Concluding Remarks
III. Recess      5:00 p.m.

September 27, 2001
IV. Reconvene D. Powers, ACRS
Cognizant Member
8:30 a.m.
V. Duane Arnold Power Uprate (Cont.)

         
   B. NRR Presentations (Open) NRR 8:40 a.m.
      1. Introduction

     
      2. NRR SER Results/Response to ACRS Questions      
         - PRA Analyses/Evaluation Of Licensee's PRA Examinations
   - Audits of Licensee's Code Calculations
   - Evaluation of ATWS Response
   - Material Degradation Issues
   - Impact on Plant Margins

     
      3. Open Issues

      
       4. Concluding Remarks

     
   C. Subcommittee Caucus (Open)       11:45 a.m.
      1. Comments on Meeting Presentations

  
       2. Follow-on Actions

     
      3. Decision to Bring Review to ACRS

    
VI. Adjourn           12:00 p.m.

1. If uncertainty evaluations not performed, provide a qualitative discussion of this matter.

2. If quantitative analyses not available, provide rigorous qualitative arguments.

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